Speaker
Christian Zimmermann
Description
Double parton distributions (DPDs) are an important piece in the descriptions of double hard interactions. On the lattice we calculate correlation functions of two local quark currents, which can be related to Mellin moments of DPDs. For the first moment we calculate all contributing Wick contractions for the nucleon (proton), considering several channels corresponding to the quark polarisation. Furthermore, we test to what extend a factorization into a convolution of generalized parton distributions (GPDs) is valid.
